Not only does Sydney have new tram lines, sorry a light rail system, it has a new 'Metro' driverless train travelling 24 kilometres from the suburban Chatswood train station to its terminus at Tallawong north west of Sydney city. The Metro is being extended to the city and then will go on to Sydney's south western suburbs. It is fast and efficient, but I found it a bit noisy and rough, and I dislike sitting sideways more than I dislike sitting backwards. It is rather a contrast to Sydney's normal suburban trains that are superbly quiet, smooth and comfortable.
We caught a bus to (near) Central Station, and a train to Chatswood. A woman was kicking off at the bus driver about how the bus went past the entrance to Central to a stop quite a distance away. The bus driver was not a transport planner and while her point was valid, she was complaining to the wrong person.
Chatswood was an interesting and quite vibrant area with many young and Asian people out and about. We had a nice brunch in a cafe after walking about a bit and then caught the Metro as far as Castle Hill. The train travelled most of the way in tunnels, so there was little to see externally. The Castle Hill Station was below ground level and we rose to the surface to view some historical panels, but there was little historical about Castle Hill Station itself being being bare, sparse and soulless, though no doubt efficient.
You can if your eyes are inhuman for viewing distances, see from one end of the Metro train to the other, something like seven carriages. The best that can be said about the Metro is that it is fast and the live onboard information displays are very good.